我的Prescription类如下:
import java.util.ArrayList;
import java.util.List;
public class Prescription {
private final ArrayList<Product> prescriptionItems = new ArrayList<Product>();
private long prescriptionId;
public List<Product> getPrescriptionItems() {
return prescriptionItems;
}
public void addPrescriptionItem(final Product product) {
this.prescriptionItems.add(product);
}
}
我的产品类别如下
public class Product {
public Product(final long productCode, final double productCost) {
this.productCode = productCode;
this.productCost = productCost;
}
private final long productCode;
private final double productCost;
public long getProductCode() {
return productCode;
}
public double getProductCost() {
return productCost;
}
}
我的测试设置如下:
我的setUp方法如下:
@BeforeEach
void setUp() throws Exception
{
medAvailControllerImpl = new MedAvailControllerImpl(medAvailDAO, dispenser, paymentHandlerFactory);
prescriptionProduct = new Product(789, 44.0);
customer = new Customer(45678, "Amofa Baffoe", "Claregalway", "kbaffoe@hotmail.com", "paypal", paypalStrategy);
when(medAvailDAO.getCustomerForId(45678)).thenReturn(customer);
}
我的JUnit / Mockito测试如下:
@Test
public void testOneItemOnPrescriptionSuccess() throws Exception {
//prescriptionProduct = new Product(789, 44.0);
prescriptionItems.add(prescriptionProduct);
when(prescription.getPrescriptionItems()).thenReturn(prescriptionItems);
}
在NullPointerException
被添加到prescriptionItems
的地方得到prescriptionProduct
。有帮助吗?
答案 0 :(得分:0)
我试图在计算机上重现您的代码,该代码可以正常工作,添加了产品,并使用List<Product> getPrescriptionItems()
完美地返回了它。
import java.util.ArrayList;
import java.util.List;
class Product {
public Product(final long productCode, final double productCost) {
this.productCode = productCode;
this.productCost = productCost;
}
private final long productCode;
private final double productCost;
public long getProductCode() {
return productCode;
}
public double getProductCost() {
return productCost;
}
}
public class Prescription {
private final ArrayList<Product> prescriptionItems = new ArrayList<Product>();
private long prescriptionId;
public List<Product> getPrescriptionItems() {
return prescriptionItems;
}
public void addPrescriptionItem(final Product product) {
this.prescriptionItems.add(product);
}
public static void main(String[] args) {
// instantiate Prescription
Prescription pres = new Prescription();
// add a product to ArrayList using addPrescriptionItem()
pres.addPrescriptionItem(new Product(50, 15.0));
// get the product details from the ArrayList
Product product = pres.getPrescriptionItems().get(0);
System.out.println(product.getProductCode()+ " " + product.getProductCost()); // will print "name in sup Class"
}
}
答案 1 :(得分:0)
尝试初始化divisionItems ArrayList:
private ArrayList <Product> prescriptionItems;
到
private ArrayList <Product> prescriptionItems = new ArrayList<Product>();
在测试代码中声明时。
如果要通过 prescription 类中的 addPrescriptionItem 方法测试添加产品的方式添加产品的新ArrayList的方式,该方法会将产品添加到已定义的ArrayList中在Prescription类中。